Upgrade to Laravel 10

app/Http/Middleware/Authenticate.php

@@ -3,6 +3,7 @@
 namespace App\Http\Middleware;
 
 use Illuminate\Auth\Middleware\Authenticate as Middleware;
+use Illuminate\Http\Request;
 
 /**
  * @codeCoverageIgnore
@@ -11,14 +12,9 @@ class Authenticate extends Middleware
 {
     /**
      * Get the path the user should be redirected to when they are not authenticated.
-     *
-     * @param  \Illuminate\Http\Request  $request
-     * @return string
      */
-    protected function redirectTo($request)
+    protected function redirectTo(Request $request): ?string
     {
-        if (! $request->expectsJson()) {
-            return route('login');
-        }
+        return $request->expectsJson() ? null : route('login');
     }
 }